package jfilters.filters;

/*
    Copyright Janne Liljeblad 2008.

    This file is part of JFilters.

    JFilters is free software: you can redistribute it and/or modify
    it under the terms of the GNU General Public License as published by
    the Free Software Foundation, either version 3 of the License, or
    (at your option) any later version.

    JFilters is distributed in the hope that it will be useful,
    but WITHOUT ANY WARRANTY; without even the implied warranty of
    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    GNU General Public License for more details.

    You should have received a copy of the GNU General Public License
    along with JFilters.  If not, see <http://www.gnu.org/licenses/>.
*/

import java.awt.image.*;

public abstract class SingleInputFilter extends JFilter
{
	public BufferedImage filter( BufferedImage src, BufferedImage dest )
	{
		BufferedImage fimg = dest;
		if( fimg == null ) fimg = src;
		if( fimg == null ) return null;

		return filter( fimg );
	}

	public abstract BufferedImage filter( BufferedImage img );

}//end class